Could somebody who read Japanese provide more information as to what is said in this post?

Basically, the package provides a driver and presentation application. The usb vga device uses a SiS 315E chipset and has only been tested with the white version of the card which is being sold as VGA out card for Zaurus, although the others might work as well if they have the same chipset but have not been tested.

CFXGA (IO Data) and Voyager VGA (ColorGraphics) are both EOL according to the blog which we know is true for the IO Data one, but haven't heard about the Voyager one being EOL yet.

In order to use the device, you will need a USB host cable and a powered hub. Since it requires USB 2.0 speed, the display using the Zaurus is quite slow.

Support for usb vga cards is now in the 2.6 kernel, however there are some devices out thier that suposidly "require" usb 20. and wont work unless it connects to a usb 2.0 port, this seems a bit absurd to me but i found this infomation floating around on then net (isnt it a requirement for all USB certified devices to be backwards compatible)

frame rate wise it should be posible to do about 18 frames a second @ 640*480, 16 bit color

Even if the Zaurus would never be to handle decoding full motion video and sending it out the USB bus to the VGA device, couldn't a simple shell be sent to the VGA out.

Excuse my ignorance, if it sounds dumb.

well, up till now, I had to use a vnc server on the zaurus and a vnc client on a pc to display the Zaurus desktop on a larger monitor. This works fine if you can network your Zaurus and the PC, but can't be done directly to a projector. It needs a PC or laptop to be the bridge wheras with this usb device, the zaurus can go directly to a projector or monitor. for most things like word processing or a terminal, the speed is sufficient. you just can't expect to be playing games or full screen videos.